System and method for storing and accessing digital media content using smart card technology
First Claim
1. A method for delivering digital media content, said method for use with a network, said network interfaced with a storage medium containing digital media content and further interfaced with an electronic device, said electronic device interfaced with a first smart card and second smart card, said method comprising the steps of:
- sending a request for said digital media content over said network from said electronic device;
receiving a stream of said digital media content in encrypted form from said medium with said electronic device, said encrypted digital media content being stored on said electronic device;
extracting a cipher from said digital media content and sending said cipher to said second smart card;
generating a new cipher with said second smart card and sending said new cipher from said second smart card to said first smart card, said first smart card equipped with a license for said digital media content;
obtaining a first decryption key in response to said new cipher using said first smart card, said decryption key being transmitted from said first smart card to said electronic device;
obtaining a second decryption key using said second smart card, said second decryption key being transmitted from said second smart card to said electronic device; and
using said first and second decryption keys and a decryption algorithm located on said electronic device to decrypt said digital media content stored on said electronic device.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method for delivering digital media content to a user over a network is disclosed. The illustrative embodiment of the present invention enables multiple types of electronic devices to access the same digital media content for the same end user through the use of a smart card equipped with a license for the digital media content. Depending on the format of the digital media content, devices such as phones, pagers, internet appliances or PDAs can be used to present the digital media content to a user, as can traditional consumer electronic devices such as DVD players and VCRs. The encrypted content may be freely transferred and stored without copyright concerns since the decryption key is generated by the smart card containing the license.
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Citations
4 Claims
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1. A method for delivering digital media content, said method for use with a network, said network interfaced with a storage medium containing digital media content and further interfaced with an electronic device, said electronic device interfaced with a first smart card and second smart card, said method comprising the steps of:
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sending a request for said digital media content over said network from said electronic device; receiving a stream of said digital media content in encrypted form from said medium with said electronic device, said encrypted digital media content being stored on said electronic device; extracting a cipher from said digital media content and sending said cipher to said second smart card; generating a new cipher with said second smart card and sending said new cipher from said second smart card to said first smart card, said first smart card equipped with a license for said digital media content; obtaining a first decryption key in response to said new cipher using said first smart card, said decryption key being transmitted from said first smart card to said electronic device; obtaining a second decryption key using said second smart card, said second decryption key being transmitted from said second smart card to said electronic device; and using said first and second decryption keys and a decryption algorithm located on said electronic device to decrypt said digital media content stored on said electronic device. - View Dependent Claims (2, 3, 4)
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Specification